var createError = require("http-errors");
var express = require("express");
var path = require("path");
var cookieParser = require("cookie-parser");
var logger = require("morgan");

var usersRouter = require("./routes/admin/userRouter");
const JWT = require("./utils/jwt");

var app = express();

// view engine setup
app.set("views", path.join(__dirname, "views"));
app.set("view engine", "jade");

app.use(logger("dev"));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, "public")));

// 判断token是否有效
app.use((req, res, next) => {
  if (req.url === "/admin/login") {
    next();
    return true;
  }
  let token = req.headers.authorization.split(" ")[1] || undefined;
  if (JWT.verify(token)) {
    next();
  } else {
    res.status(401).send({
      code: 401,
      data: "token无效",
    });
  }
});

// 系统路由
app.use("/admin", usersRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get("env") === "development" ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render("error");
});

module.exports = app;
